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Prepn. of laser damage-resisting wide-band antireflecting film

A wide-band, anti-reflection film technology, applied in optics, optical components, and devices for coating liquid on the surface, can solve the problems of high cost of film layers, complex sol preparation and coating process, etc., and achieve simple operation and high efficiency. Effects of resistance to laser damage threshold and mild preparation conditions

Inactive Publication Date: 2004-09-22
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the literature (SPIE vol.2253:764) it is reported that the wide-band anti-reflection coatings currently plated abroad are composed of zirconia sol-polyethylene fillers, fluorine-containing film layers and hybrid silanes as cross-linking agents. It is a multi-layer film, the cost of the film layer is high, and the sol preparation and coating process are complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] 1) Preparation of coating sol

[0013] 5ml Si(OC 2 h 5 ) 4 With 100ml absolute ethanol, 0.08ml NH 3 ·H 2 O, 0.8ml H 2 O, 0.1mlPEG, 0.19PVP were stirred and mixed for reaction;

[0014] 2) Aging: Put the homogeneously mixed solution in an airtight container, and age at 0°C for 60 days.

[0015] 3) Coating: One layer of single-sided coating is carried out by pulling coating method.

[0016] 4) Evaluation: Measure the optical transmittance of the film layer with PC2501 UV / VIS spectrometer

[0017] T C (%). The laser damage threshold LDT of the coating was measured at 1064nm. See Table 1 for the data.

Embodiment 2

[0019] 1) Preparation of coating solution

[0020] 5ml Si(OC 2 h 5 ) 4 With 50ml absolute ethanol, 032ml NH 3 ·H 2 O, 0.5ml H 2 O, 0.1mlPEG, 0.2mlPVP were stirred and mixed for reaction;

[0021] 2) Aging: the obtained uniformly mixed solution was placed in a closed container, and aged at 40° C. for 10 days. 3) and 4) of Example 1 were repeated.

Embodiment 3

[0023] 1) Preparation of coating solution: 10ml Si(OC 2 h 5 ) 4 With 100ml absolute ethanol, 2.5mlNH 3 ·H 2 O, 0.2mlPEG, 0.1mlPVP were stirred and mixed for reaction;

[0024] 2) Aging: Store the obtained uniformly mixed solution in a sealed container, and place it at 60° C. for aging for 3 days. 3) and 4) of Example 1 were repeated.

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Abstract

A preparation method of laser damage-resisting wide-band antireflecting film with ethyl emtasilicate as presoma includes mixing water, absolute alcohol, polyvinyl pyrrolidone and polyglycol in a certain proportion in the presence of ammonia water catalyst, reaction by sufficient stirring, ageing, and film plating. The present invention has the advantages of mild preparation condition, low cost and simple operation, and the prepared SiO2 film has antireflecting performance of 400-600 nm bandwidth and high laser damage resistance.

Description

[0001] Field: [0002] The invention belongs to a preparation method of an anti-reflection film, in particular to a SiO with a high resistance to laser damage threshold 2 The invention discloses a preparation method of a single-layer broadband anti-reflection film. Background technique [0003] Coating of optical components usually adopts physical coating and sol-gel (Sol-gel) chemical coating. Among them, the practical application of the physical method is limited due to its insurmountable shortcomings such as complex equipment, high cost, difficulty in controlling the microstructure of the film layer, and low anti-laser damage threshold. In recent years, the research work of coating optical components of laser systems with Sol-gel method has made great progress. Compared with the traditional physical coating method, the Sol-gel method has the advantages of high laser damage threshold, good surface uniformity, and low cost. In particular, this method is especially suitable ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C3/00C03C17/30G02B1/113
Inventor 孙予罕章斌吴东范文浩徐耀
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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